Cheesy Garlic Scalloped Potatoes
These Cheesy Garlic Scalloped Potatoes are the ultimate comfort-food side dish, featuring tender Yukon gold potatoes layered in a creamy, garlic-infused cheese sauce. Baked until golden and bubbly, this dish is perfect for holiday dinners or cozy weeknight meals.
Prep Time15 minutes mins
Cook Time1 hour hr 30 minutes mins
Total Time1 hour hr 45 minutes mins
Course: Side Dish
Cuisine: American
Keyword: baked potato casserol, cheesy potatoes, creamy scalloped potatoes, garlic scalloped potatoes, holiday side dish
Servings: 12
Calories: 239kcal
- 2.5 –3 lbs Yukon gold potatoes thinly sliced (1/8 inch; no need to peel)
- 1/4 cup butter
- 1 medium onion diced
- 8 –10 cloves garlic minced
- 1/4 cup all-purpose flour
- 2 cups milk
- 1 cup chicken broth
- 1/2 teaspoon dried thyme
- 1 teaspoon salt
- 1 cup cheddar cheese shredded
- 1 cup mozzarella cheese shredded
- 3/4 cup Parmesan cheese grated
Preheat the oven to 350°F.
Scrub and clean the potatoes, then slice them into 1/8-inch rounds using a mandoline slicer or sharp knife. Set aside.
In a medium saucepan over medium heat, melt the butter. Add the diced onion and minced garlic. Sauté for 1–2 minutes until soft but not browned.
Stir in the flour to form a roux. Gradually add the milk, chicken broth, thyme, and salt, stirring continuously. Bring to a gentle boil and cook until the sauce thickens slightly.
Turn off the heat and stir in the cheddar, mozzarella, and Parmesan cheeses. Mix until combined (some cheese may not fully melt—this is fine).
Lightly grease a 9" x 13" casserole dish. Layer 1/3 of the sliced potatoes in the dish, followed by 1/3 of the cheese sauce. Repeat layers two more times, finishing with the remaining sauce.
Cover with aluminum foil and bake for 30 minutes.
Remove the foil and continue baking for 35–45 minutes, or until the top is golden and the potatoes are fork tender.
Let cool for 10 minutes before serving to allow the sauce to set.
Slice potatoes thinly (about 1/8 inch) for even cooking.
Ensure all potato slices are coated in sauce to prevent undercooking.
For a crispier top, broil for a few minutes after baking.